Shut down gamestream session upon exit about moonlight_hdr_launcher

[ReenigneCA]

After posting the above I did a quick test. I replaced the MassEffectAndromeda.exe file in my moonlight_hdr_launcher folder with the compiled version of the sample win32 app from visual studio 2022. The app just creates an empty window. When I do this if I close the window the stream ends automatically and gracefully. I plan on doing a pull request to add an option to create and later close an empty window gotta get to some regular life stuff first.

[lyckantropen]

Thanks for looking at this. Unfortunately I can't spare the time right now to try and address this so feel free to poke around and create a PR.

[ReenigneCA]

here is the pull request
This appears to work perfectly for me. I don't bother to error check window creation because 1 it seems to work and 2 if it doesn't best we can do is just press on anyway. Rather than make a flag for this it seems to me it always makes sense when we're waiting on a process and never otherwise.

[lyckantropen]

I've merged the PR into develop and made some of my own changes. There's a new release. Have a look.